WO2006006976A1 - Network topology and method of operation for a playback system in a digital cinema network - Google Patents
Network topology and method of operation for a playback system in a digital cinema network Download PDFInfo
- Publication number
- WO2006006976A1 WO2006006976A1 PCT/US2005/011861 US2005011861W WO2006006976A1 WO 2006006976 A1 WO2006006976 A1 WO 2006006976A1 US 2005011861 W US2005011861 W US 2005011861W WO 2006006976 A1 WO2006006976 A1 WO 2006006976A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- network
- address
- devices
- digital cinema
- notification
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2807—Exchanging configuration information on appliance services in a home automation network
- H04L12/2809—Exchanging configuration information on appliance services in a home automation network indicating that an appliance service is present in a home automation network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/35—Network arrangements, protocols or services for addressing or naming involving non-standard use of addresses for implementing network functionalities, e.g. coding subscription information within the address or functional addressing, i.e. assigning an address to a function
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/604—Address structures or formats
Definitions
- the present invention pertains generally to digital cinema and pertains more specifically to methods and devices for a use in a network of equipment in a digital cinema system.
- digital cinema includes the production, delivery and presentation of aural/visual material in auditoriums or theatres using digital technology.
- Digital cinema programs typically are distributed in a compressed and encrypted form on physical media such as DVD-ROM, tape or computer hard drives and can in principle be distributed by electronic transmission using satellite or other broadband communication paths.
- Digital cinema playback systems control the processes required to make a digital cinematic presentation. These processes include receiving and storing the digital cinema program, decompressing and deciphering it into digital video and audio data streams that can be processed by digital content decoders, decoding the content of the data streams to obtain signals that may be used drive video displays and audio amplifiers, and controlling other facilities such as curtains or theatre lighting that are found in a theatre auditorium.
- Typical digital cinema playback systems include several pieces of equipment that communicate with one another through an electrical network that is similar to many networks that are used to interconnect computers. These networks often conform to a standard that is commonly known as Ethernet, which is described in the IEEE 802.3 standard, using a communication protocol known as the Transmission Control Protocol/Internet Protocol (TCP/IP).
- TCP/IP Transmission Control Protocol/Internet Protocol
- a server device in a digital cinema playback system receives an identifier specified by one or more operator-actuated controls that designates a device for displaying a digital cinematic presentation, establishes a set of network device addresses in response to the identifier, selects an address from the set of network device addresses, assigns the selected network device address to a client device in the plurality of devices, and sends a notification of the selected network device address through the network to the client device, and uses the selected address to instruct the client device through the network to alter its operation, thereby controlling one or more features of the digital cinematic presentation.
- a client device in a digital cinema playback system receives an identifier from one or more operator-actuated controls that designates a device for displaying a digital cinematic presentation, sends a notification through the network to a server device in the plurality of devices that conveys the identifier, uses an interim address to receive a notification from the server device through the network that conveys a network device address, and uses the network device address to receive instructions from the network and, in response, alters its operation to control one or more features of the digital cinematic presentation.
- Fig. 1 is a schematic block diagram of a digital cinema network.
- Figs. 2-5 are schematic block diagrams of digital cinema playback systems.
- Fig. 6 is a diagram showing steps in a method for operating server and client devices in a playback system network.
- Fig. 7 is a schematic block diagram of a device that may be used to implement various aspects of the present invention.
- FIG. 1 illustrates a digital cinema network that has multiple playback systems.
- a typical system has a playback system for each auditorium in a digital cinema theatre complex; however, the network and equipment may be organized and installed in a wide variety of ways including, for example, multiple playback systems in a single auditorium with one or more screens. This latter arrangement allows multiple digital cinema programs to be presented simultaneously in one auditorium.
- a theatre management server 10, a gateway 30, and playback systems 40a, 40b are connected to one another by a network using a theatre network switch 20.
- a theatre network switch 20 Preferably, a Gigabit Ethernet or IOOOB ASE-T network is used.
- the theatre management server 10 performs a variety of services including administration and overall control of the playback systems 40a, 40b in the digital cinema network. Examples of these services are discussed briefly below.
- the gateway 30 is optional and provides a communication link between the digital cinema network and one or more communication paths such as a satellite communication link 33 or a terrestrial wideband network 37. Alternatively, the gateway may be incorporated into the switch 20 to provide a single switch/gateway or router device.
- the communication paths may be used to deliver information such as cinema promotional material and digital cinema program decryption keys. Virtual private networking or similar functions may be provided to better protect sensitive information such as decryption keys.
- the theatre management server 10 provides services that are important to the operation and management of a theatre but it need not provide any services or perform any functions that are essential to the present invention.
- the theatre management server 10 provides services that allow personnel to configure and test theatre systems and equipment including playback systems, collect information describing the operation of the theatre systems, diagnose the cause of system malfunctions, receive and manage media content and decryption keys, assemble the media content into cinematic presentations or "shows," schedule and control the presentation of the shows, and assist with the management of licenses for media content including Digital Rights Management (DRM).
- DRM Digital Rights Management
- each playback system 40 is functionally independent of all other playback systems in the network.
- a respective playback system 40 may operate to provide a digital cinematic presentation without requiring services from equipment in any other playback system.
- Each respective playback system has equipment with one or more operator-actuated controls such as thumb-wheel or rotary switches, for example, that allow an operator to specify a unique identifier for the respective playback system.
- the operator-actuated controls are used to control the assignment of network IP addresses to the devices in each playback system.
- the playback systems may be implemented in a variety of ways. A few ways are described in the following paragraphs.
- the schematic block diagram shown in Fig. 2 illustrates one implementation of a pla ⁇ ack system 40 that includes a show store 41, a show player 42, a display 43, an audio processor 44, an automation interface 45, and a switch 49.
- the switch 49 provides network connections between all of these devices except the show player 42.
- Communication paths 51, 53, 54 directly connect the show player 42 to the show store 41, the display 43 and the audio processor 44, respectively.
- the show store 41 is connected to the network switch 20 through communication path 52 and acts as a file server to receive and store one or more digital cinema programs.
- the show store 41 may store show configurations, show schedules, and information related to licensing, DRM and encryption.
- the show store 41 also acts as a Dynamic Host Configuration Protocol (DHCP) server to control the assignment of network IP address to devices in the playback system 40 and may implement Service Location Protocol (SLP) user and service agents to facilitate the provision of services within the playback system.
- DHCP and SLP are described in Internet Requests for Comments (RFC) 1541 and RFC 2165, respectively.
- the show store 41 extracts information from the stored programs, reformats the extracted information into an encoded representation that facilitates subsequent processing, and provides the encoded representation to the show player 42.
- the encoded information is conveyed from the show store 41 to the show player 42 by a wideband communication path 51 such as a dedicated IOOOB ASE-T Ethernet path that connects directly between these two devices.
- the encoded representation conveys video information encoded according to some standard such as the MPEG-2 standard that is described in the International Standards Organization (ISO) Motion Picture Experts Group (MPEG) documents ISO/IEC 13818-1 through 13818-9, or the JPEG-2000 standard described in ISO/IEC 15444:2000, and conveys audio information that may be encoded as Pulse Code Modulation (PCM) data, MetaAudio Enhanced PCM data or data generated by an encoding process such as MetaAudio Dolby F.
- PCM Pulse Code Modulation
- MetaAudio Enhanced PCM data or data generated by an encoding process
- An example of a suitable show store 41 is the Dolby Show Store DSSlOO, available from Dolby Laboratories, San Francisco, California.
- the show player 42 is a digital content decoder that decodes this encoded representation to obtain digital video and digital audio information, which are provided to the display 43 and the audio processor 44, respectively, through communication paths 53, 54.
- the encoded representation may be encrypted. If it is encrypted, the show player 42 uses an appropriate video-content decryption key to decipher the video content.
- a technique is used such as that described in the Federal Information
- the show store 41 receives the appropriate video-content decryption key from the theatre management server 10, which may store this key and subsequently pass it to the show player 42 as needed or which may pass the key to the show player 42 without storing it.
- the show store 41 receives an encrypted version of the video-content decryption key that was encrypted using a public key uniquely associated with the show player 42.
- the show player 42 deciphers the encrypted video-content decryption key using its own private key, uses the video-content decryption key to decipher and decode the video information as required and, if desired, encrypts the decoded video information for subsequent delivery to the display 43.
- the encryption may conform to some standard or other specification such as the proposed Society of Motion Picture and Television Engineers (SMPTE) DC28.4 standard or it may conform to proprietary processes that are compatible with the display 43.
- An example of a suitable show player 42 is the Dolby Show Player, DSPlOO, available from Dolby Laboratories, San Francisco, California.
- the display 43 receives the decoded video information from the show player 42, deciphers the information if necessary, and presents the video information for viewing.
- the display may be essentially any device that is capable of presenting the video information such as a liquid crystal display (LCD) panel or a projector that can project an image onto a screen or other display medium.
- the decoded video information is conveyed directly from the show player 42 to the display 43 by a wideband communication path 53 in a form that is compliant with the High Definition Serial Data Interface (HD-SDI) as described in the SMPTE 292M standard.
- HD-SDI High Definition Serial Data Interface
- An example of a suitable display 43 is the model DPlOO projector available from Barco N.V., Pres. Kennedypark 35, 8500 Kortrijk, Belgium.
- the audio processor 44 receives the audio information from the show store 42, decodes the audio information if necessary, and applies filtering and equalization as desired to generate a signal that may be amplified for presentation by loudspeakers or other acoustic transducers.
- An example of a suitable audio processor 44 is the cinema sound processor model CP650, available from Dolby Laboratories, San Francisco, California.
- the audio information is conveyed from the show player 42 to the audio processor 44 by a wideband communication path 54 that directly connects between these two devices and conforms to the SMPTE 276M standard.
- the automation interface 45 generates signals in response to commands received through the switch 49 to control auditorium lighting, curtains and other components in a theatre automation system.
- An example of a suitable automation interface is the Network Automation Interface NAlO, available from Dolby Laboratories, San Francisco, California.
- the switch 49 switches traffic within the network of the playback system 40.
- it supports a 1000 Mbs or faster network such as a IOOOB ASE-T network.
- the schematic block diagram shown in Fig. 3 illustrates another implementation of a playback system 40 that is similar to the implementation shown in Fig. 2 except that a network connection to the show player 42 replaces the dedicated wideband communication path 51 between the show player 42 and the show store 41. This implementation imposes much higher bandwidth requirements upon the switch 49.
- FIG. 4 illustrates yet another implementation of a playback system 40 that is similar to the implementation shown in Fig. 2 except that the show store 41 and the show player 42 are incorporated into the same device, which is shown in the figure as show processor 46.
- This implementation imposes about the same bandwidth requirements upon the network and the switch 49 as that imposed by the implementation shown in Fig. 2.
- FIG. 5 illustrates another implementation of a playback system 40 that is similar to the implementation shown in Fig. 2 except that the show player 42 and the display 43 are incorporated into the same device, which is shown in the figure as display processor 47.
- This implementation imposes about the same bandwidth requirements upon the network and the switch 49 as that imposed by the implementation shown in Fig. 2. Playback System Operation
- one and only one device in each playback system has one or more operator-actuated controls that are used to uniquely identify each playback system.
- the show player 42 may have one or more thumbwheel or rotary switches that may be operated to specify an identification for the playback system.
- the operator-actuated controls in each playback system identify the display 43 or display device in the respective playback system that displays a digital cinematic presentation.
- the operator-actuated controls could be provided on the display 43 itself; however, it may be more convenient to provide these controls on equipment that is not required to be located at the presentation site. This would allow the equipment with the operator- actuated controls for all playback systems in a theatre complex to be centrally located.
- the show store 41 and the show player 42 for example, may be centrally located if desired. The following examples assume the operator-actuated controls are provided on the show player 42.
- the show store 41 controls the assignment of network IP addresses to equipment in its respective playback system. This may be accomplished by the method steps shown in Fig. 6. One way of performing these steps is as follows: Step 101. The show store and the store player are started. If these devices are implemented by program-controlled processors, this may be done by "booting" the processors.
- Step 102 The show store obtains the identifier specified by operator-actuated controls. This may be done in a variety of ways. One way is for the show store and the show player to each assume a respective interim network IP address such as 192.168.0.1 and 192.168.0.2, respectively. Using the interim addresses, the show store sends a command to the show player requesting the identifier specified by its operator-actuated controls. In response to the request, the show player returns an indication of the identifier specified by the operator-actuated controls.
- a respective interim network IP address such as 192.168.0.1 and 192.168.0.2
- Step 103 Using the identifier, the show store establishes a set of network IP addresses from which device addresses may be assigned. This may be done in a variety of ways. One way establishes the set of addresses to be the IP address space defined by 192.168.ID.### where ID is the identifier specified by the operator-actuated controls and ### is any number in the range from 0 to 255. If this method is used, preferably the ID is constrained to not equal zero to avoid conflicts with the interim addresses used above in Step 102. In a preferred implementation, the show store assigns to itself a network IP address that is selected from the set of addresses.
- Step 104 The show store assigns to the show player another network IP address that is selected from the set of addresses. This may be done by causing the show player to request DHCP services for assignment of an IP address.
- the show store may also assign network IP addresses to other devices in the playback system network by selecting respective addresses from the set of addresses. This may be done by causing the other devices to request DHCP services for assignment of addresses.
- Step 105 Subsequent communication between equipment in the playback system may use the assigned network IP addresses.
- This communication may include instructions from a first device to a second device that causes the second device to alter its operation, thereby controlling one or more features of a digital cinematic presentation.
- the show store 41 of a respective playback system 40 may act as a network router that provides a two-way communication link between devices in the respective playback system and other devices elsewhere in the digital cinema network; however, preferably the show store does not forward requests for network IP addresses outside the playback system.
- the show store in a respective playback system preferably does not assign network IP addresses to devices in the digital cinema network that are outside the respective playback system.
- the installation, maintenance and administration of a playback system may be facilitated by having equipment in each system notifying one another of the need and availability of various services.
- the show store 42 may issue a notice that it requires the services of an automation interface that is capable of controlling theatre assets such as curtains and lights in an auditorium.
- the automation interface 45 in the same or another playback system may reply with a notice that it is capable of providing the requested service.
- the reply could include its dynamically assigned network IP address together with other information that more fully describes its capabilities.
- FIG. 7 is a schematic block diagram of a device 70 that may be used to implement aspects of the present invention.
- the processor 72 provides computing resources.
- RAM 73 is system random access memory (RAM) used by the processor 72 for processing.
- ROM 74 represents some form of persistent storage such as read only memory (ROM) for storing programs needed to operate the device 70 and possibly for carrying out various aspects of the present invention.
- FO control 75 represents interface circuitry to receive and transmit signals by way of the communication channels 76, 77.
- bus 71 which may represent more than one physical or logical bus; however, a bus architecture is not required to implement the present invention.
- additional components may be included for interfacing to devices such as a keyboard or mouse and a display, and for controlling a storage device 78 having a storage medium such as magnetic tape or disk, or an optical medium.
- the storage medium may be used to record programs of instructions for operating systems, utilities and applications, and may include programs that implement various aspects of the present invention.
- the computer system is tolerant to hardware failures.
- One way in which this may be done is to provide redundant components such as dual power supplies and redundant storage devices, and to use an operating system that is capable of detecting and reacting to faults.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Automation & Control Theory (AREA)
- Small-Scale Networks (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05744574A EP1759518A1 (en) | 2004-06-17 | 2005-04-08 | Network topology and method of operation for a playback system in a digital cinema network |
CA002567029A CA2567029A1 (en) | 2004-06-17 | 2005-04-08 | Network topology and method of operation for a playback system in a digital cinema network |
JP2007516467A JP2008506281A (en) | 2004-06-17 | 2005-04-08 | Network topology and operation method of playback system in digital cinema network |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/870,698 US20060020690A1 (en) | 2004-06-17 | 2004-06-17 | Network topology and method of operation for a playback system in a digital cinema network |
US10/870,698 | 2004-06-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006006976A1 true WO2006006976A1 (en) | 2006-01-19 |
WO2006006976A8 WO2006006976A8 (en) | 2007-01-04 |
Family
ID=34968523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/011861 WO2006006976A1 (en) | 2004-06-17 | 2005-04-08 | Network topology and method of operation for a playback system in a digital cinema network |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060020690A1 (en) |
EP (1) | EP1759518A1 (en) |
JP (1) | JP2008506281A (en) |
CN (1) | CN1965559A (en) |
CA (1) | CA2567029A1 (en) |
WO (1) | WO2006006976A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009094590A (en) * | 2007-10-04 | 2009-04-30 | Nippon Telegr & Teleph Corp <Ntt> | Movie projector having tamper-resistant function |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8536989B2 (en) * | 2007-02-26 | 2013-09-17 | Thomson Licensing | Method and apparatus for providing a communication link |
US20090125962A1 (en) * | 2007-11-12 | 2009-05-14 | Colosky Jr William James | Automatic digital content migration system for theaters |
US8667100B2 (en) | 2010-07-07 | 2014-03-04 | Comcast Interactive Media, Llc | Device communication, monitoring and control architecture and method |
US10540165B2 (en) * | 2016-02-12 | 2020-01-21 | Nutanix, Inc. | Virtualized file server rolling upgrade |
CN106422374B (en) * | 2016-11-22 | 2018-03-13 | 深圳市环球数码科技有限公司 | A kind of dynamic visual impact strengthening system and control method for digital camera |
US10193832B2 (en) * | 2016-12-09 | 2019-01-29 | Google Llc | Notification delivery mechanism for present viewing users |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0817423A1 (en) * | 1996-07-04 | 1998-01-07 | Hager Electro S.A. | Method and apparatus for configuring a communications network |
WO2002097555A2 (en) * | 2001-05-30 | 2002-12-05 | Lg Electronics Inc. | Network control system for home appliances |
EP1372301A1 (en) * | 2001-03-19 | 2003-12-17 | Sony Corporation | Network system |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69534896T2 (en) * | 1994-10-24 | 2006-10-12 | Intel Corp., Santa Clara | VIDEO INDEXING PROTOCOL |
US5801754A (en) * | 1995-11-16 | 1998-09-01 | United Artists Theatre Circuit, Inc. | Interactive theater network system |
US7382334B1 (en) * | 1996-04-26 | 2008-06-03 | T-Rex Property Ab | Digital information system |
US5884024A (en) * | 1996-12-09 | 1999-03-16 | Sun Microsystems, Inc. | Secure DHCP server |
US5872615A (en) * | 1997-09-30 | 1999-02-16 | Harris, Jr.; Robert Crawford | Motion picture presentation system |
US6141530A (en) * | 1998-06-15 | 2000-10-31 | Digital Electronic Cinema, Inc. | System and method for digital electronic cinema delivery |
US7039688B2 (en) * | 1998-11-12 | 2006-05-02 | Ricoh Co., Ltd. | Method and apparatus for automatic network configuration |
US6384893B1 (en) * | 1998-12-11 | 2002-05-07 | Sony Corporation | Cinema networking system |
US6601093B1 (en) * | 1999-12-01 | 2003-07-29 | Ibm Corporation | Address resolution in ad-hoc networking |
WO2002057848A2 (en) * | 2001-01-18 | 2002-07-25 | Madstone Films | A method and system providing a digital cinema distribution network having backchannel feedback |
US6982780B2 (en) * | 2001-03-02 | 2006-01-03 | Technicolor Digital Cinema, Llc | Apparatus and method for building a playlist |
US6700640B2 (en) * | 2001-03-02 | 2004-03-02 | Qualcomm Incorporated | Apparatus and method for cueing a theatre automation system |
US20020122052A1 (en) * | 2001-03-02 | 2002-09-05 | Jason Reich | Apparatus and method for monitoring the status of a digital cinema system |
US8397164B2 (en) * | 2001-03-02 | 2013-03-12 | Technicolor Digital Cinema Llc | Apparatus and method for loading media in a digital cinema system |
US20020138832A1 (en) * | 2001-03-23 | 2002-09-26 | Svoboda Michael D. | System for distributing and showing multimedia advertising in theatres and method of operation thereof |
WO2002095600A1 (en) * | 2001-05-24 | 2002-11-28 | Electronic Advertising Solutions Innovators, Inc. Dba Easi, Inc. | System and method for managing in-theater display advertisements |
US6829033B2 (en) * | 2001-08-31 | 2004-12-07 | Qualcomm Incorporated | Presentation scheduling in digital cinema system |
TWI227614B (en) * | 2003-06-06 | 2005-02-01 | Hon Hai Prec Ind Co Ltd | Method for dynamically allocating IP addresses for hosts on a network |
-
2004
- 2004-06-17 US US10/870,698 patent/US20060020690A1/en not_active Abandoned
-
2005
- 2005-04-08 CN CNA2005800184837A patent/CN1965559A/en active Pending
- 2005-04-08 EP EP05744574A patent/EP1759518A1/en not_active Withdrawn
- 2005-04-08 WO PCT/US2005/011861 patent/WO2006006976A1/en not_active Application Discontinuation
- 2005-04-08 JP JP2007516467A patent/JP2008506281A/en active Pending
- 2005-04-08 CA CA002567029A patent/CA2567029A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0817423A1 (en) * | 1996-07-04 | 1998-01-07 | Hager Electro S.A. | Method and apparatus for configuring a communications network |
EP1372301A1 (en) * | 2001-03-19 | 2003-12-17 | Sony Corporation | Network system |
WO2002097555A2 (en) * | 2001-05-30 | 2002-12-05 | Lg Electronics Inc. | Network control system for home appliances |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009094590A (en) * | 2007-10-04 | 2009-04-30 | Nippon Telegr & Teleph Corp <Ntt> | Movie projector having tamper-resistant function |
Also Published As
Publication number | Publication date |
---|---|
CA2567029A1 (en) | 2006-01-19 |
EP1759518A1 (en) | 2007-03-07 |
CN1965559A (en) | 2007-05-16 |
WO2006006976A8 (en) | 2007-01-04 |
JP2008506281A (en) | 2008-02-28 |
US20060020690A1 (en) | 2006-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1771146B1 (en) | Frame synchronization in an ethernet ntp time-keeping digital cinema playback system | |
US9948994B2 (en) | Transmission of digital audio signals using an internet protocol | |
EP3477952B1 (en) | Devices, systems and methods for distribution of digital content | |
EP1759518A1 (en) | Network topology and method of operation for a playback system in a digital cinema network | |
JP2004529532A (en) | Dispersion and networking of television signals, video signals and other signals, installation of such distributed systems, and control of television receivers | |
US20090013358A1 (en) | Distributed video recording and playback | |
JP2014082763A (en) | Device group control | |
US20070143804A1 (en) | System, method and apparatus for distributing Video-On-Demand (VOD) | |
CN1653817A (en) | Control of an AV content source component by an av content sink component | |
US20120204203A1 (en) | Method for interactive digital cinema system | |
KR20060059334A (en) | Resolving a distributed topology to stream data | |
EP1611507A1 (en) | System and method for providing a digital media supply chain operation system and suite of applications | |
US20050005306A1 (en) | Television portal services system and method using message-based protocol | |
CA2657113A1 (en) | Association of networked terminals to a common account | |
WO2017092700A1 (en) | Condition receiving method and system for intelligent operating system | |
US20110258312A1 (en) | System and method for monitoring and controlling server systems across a bandwidth constrained network | |
JP2003098594A (en) | Remote control system for projector, program and recording medium | |
RU82348U1 (en) | DISTRIBUTION AND MONITORING SYSTEM OF DIGITAL CINEMA CONTENT | |
JP2003258895A (en) | Content distribution device and content receiver | |
Zimmermann et al. | RMI system: Internet meets the future home theater | |
CN110798710A (en) | Streaming media processing method and device | |
JP2005159718A (en) | Line terminal adaptor and communication system | |
Carls | System evaluation of hardware and software for a streaming multimedia server using the multicasting protocol |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 3248/KOLNP/2006 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2567029 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580018483.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007516467 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005744574 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2005744574 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2005744574 Country of ref document: EP |